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ratios for Wella 12W Printed From: HairBoutique.com Category: Hair Talk Forum Name: Hair Color Forum Description: The tricks and tribulations of changing your hair color URL: https://talk.hairboutique.com/forum_posts.asp?TID=69369 Printed Date: January 09 2025 at 9:04am Topic: ratios for Wella 12W Posted By: Miss M Subject: ratios for Wella 12W Date Posted: September 25 2011 at 6:59pm I have dark brown roots and blonde hair. I want to have hair the same color with Wella 12W and 20% volume. Should I put on roots first? How long? and them put on all hair for how long? I know I can do this with a little help! ------------- Miss M

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